If he is JUST recording a guitar, get him a 1 or 2 channel mixer or audio interface he can plug his guitar right into a “Line input” so that he can plug the mixer into a computer via usb, firewire, or just the regular headphone output or RCA outputs into the computer’s audio input. There are free programs to record into and the one I used to use was Audacity. Just set the input in the preferences to audio input so it can know where to get it from. If you have any other questions or I wasn’t too clear on something haha feel free to send me an email at slipknotrokr12@yahoo.